Vulnerability Details : CVE-2021-31643
An XSS vulnerability exists in several IoT devices from CHIYU Technology, including SEMAC, Biosense, BF-630, BF-631, and Webpass due to a lack of sanitization on the component if.cgi - username parameter.
Vulnerability category: Cross site scripting (XSS)
Products affected by CVE-2021-31643
- cpe:2.3:o:chiyu-tech:semac_s2_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:chiyu-tech:semac_d1_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:chiyu-tech:semac_d2_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:chiyu-tech:semac_d4_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:chiyu-tech:semac_s3v3_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:chiyu-tech:semac_d2_n300_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:chiyu-tech:semac_s1_osdp_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:chiyu-tech:bf-630_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:chiyu-tech:webpass_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:chiyu-tech:bf-631_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:chiyu-tech:biosense_firmware:-:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-31643
62.16%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 98 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-31643
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
3.5
|
LOW | AV:N/AC:M/Au:S/C:N/I:P/A:N |
6.8
|
2.9
|
NIST | |
|
5.4
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
2.3
|
2.7
|
NIST |
CWE ids for CVE-2021-31643
-
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-31643
-
https://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chiyu-iot-devices#cve-2021-31643
CHIYU IoT devices - Red Teaming and Malware AnalysisExploit;Third Party Advisory
-
https://www.chiyu-tech.com/msg/message-Firmware-update-87.html
Firmware updateVendor Advisory
-
http://packetstormsecurity.com/files/162887/CHIYU-IoT-Cross-Site-Scripting.html
CHIYU IoT Cross Site Scripting ≈ Packet StormExploit;Third Party Advisory;VDB Entry
-
https://seguranca-informatica.pt/dancing-in-the-iot-chiyu-devices-vulnerable-to-remote-attacks/
Dancing in the IoT: CHIYU devices vulnerable to remote attacksExploit;Third Party Advisory
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